(19)

(11)

EP 3 676 235 A1

(12)

(43) Date of publication: 08.07.2020 Bulletin 2020/28 (21) Application number: 18766502.1 (22) Date of filing: 28.08.2018

(51) International Patent Classification (IPC):  C04B 40/06(2006.01) C04B 111/00(2006.01) C04B 103/00(2006.01) B65D 65/46(2006.01) (86) International application number: PCT/US2018/048325 (87) International publication number: WO 2019/046290 (07.03.2019 Gazette 2019/10)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 29.08.2017 US 201762551606 P 31.07.2018 US 201816050351 (71) Applicant: United States Gypsum Company Chicago, IL 60661-3676 (US)

(72) Inventors: EMAMI, Samar Chicago, Illinois 60654 (US) GRUSSING, Jeffrey F. Trevor, Wisconsin 53179 (US) BERNICKE-GRUSSING, Nancy L. Trevor, Wisconsin 53179 (US) IMMORDINO, Salvatore C. Trevor, Wisconsin 53179 (US) KAINI, Nabin Fort Worth, Texas 76155 (US) DONOVAN, Alexander J. Lake Forest, Illinois 60045 (US) (74) Representative: BSB Patentanwälte Schütte & Engelen Partnerschaft mbB  Am Markt 10 59302 Oelde 59302 Oelde (DE)